Hammer-lock for firearms.



PATENTED JUNE 13, 1905.

M. V. B. ALLEN. HAMMER LOCK FOR FIREARMS.

APPLICATION FILED DBO. 16. 1904.

INVENTOR r 22 VB flllen .zrromvzrs WITNESSES NITED STATES Patented June 13, 1905.

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HAMMER-LOCK FOR FIREARMS.

SPECIFICATION forming part of Letters Patent No. 792,382, dated June 13, 1905.

Application filed December 16,1904. Serial No- 237,062.

To all whom, it may concern.-

Be it known that I, MARTIN V. B. ALLEN, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Ham mer-Locks for Firearms, of which the following is a specification, such as will enable those skilled in the art to which it appcrtains to make and use the same.

The object of this invention is to provide an improved hammer-lock for guns of various kinds and classes and one which is particularly adapted for use in connection with what is known as a double-acting pistol or revolver having the usual pivotally-supported and spring-operated hammer, a further object being to provide a hammer-lock for a gun of this class whereby the gun when the hammer is locked cannot be used or the hammer operated Without a knowledge of the construction and operation of the lock with which the gun is provided; and with these and other objects in View the invention consists of a hammer-lock for guns of the class specified constructed as hereinafter described and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which Figure 1 is a side View of an ordinary double-acting revolver provided with my improved hammer-lock, part of the construction being in section; Fig. 2, asection on the line 2 2 of Fig. l, and Fig. 3 a section on the line 3 3 of Fig. 1.

In the drawings forming part of this specification I have shown an ordinary doubleacting revolver having the usual rotatable cylinder 0 and hammer b, and said hammer in the operation of the gun is thrown forward in the usual manner by a mainspring 0, placed in the handle (Z, and all of these parts are of the usual form and construction and operate in the usual manner.

In the practice of my invention I mount transversely of the handle d and in the chamber d therein and just rearwardly of the hammer b and above the mainspring c a rotatable device a, and said rotatable device is provided at its ends with journals 0 mounted in the opposite side portions of the handle (Z, and one of said journals is mounted in ascrewthreaded plug f, which resembles when in position an ordinary screw.

In the form of construction shown the retatable device 0 is cylindrical in form, and one side thereof is provided with a recess 0 to permit of the free operation of the mainspring 0 and also of said rotatable device. Connected with the rotatable device a and near one end thereof is a backwardly-directed angle-armf and one end f thereof passes through a slot (Z in the handle (Z and is pro vided with a head f which is similar to an ordinary screw-head, and the dimensions of the slot (Z are such that the head fin any position of the angle-arm f wi1l cover said slot, and the opposite side of the handle (Z is preferably provided with a screw 9, which constitutes simply a blind and is intended to cause the op posite sides of the handle to appear of the same construction. vided between the arm f 2 and the opposite end of said rotatable device with a finger or nose piece it, which is adapted to bear on the shoulder Z2 of the hammer b in one position of the rotatable device a, said position being shown in full lines in Fig. 1, and in another position of the rotatable device 6 and the angle-arm f which is indicated in dotted lines in Fig. 1, the finger or nose piece [1, is disengaged from the hammer 6 and the hammer may be operated in the usual manner.

The lower back portion of the handle (Z is provided with the usual removable side plates z, in one of which the slot or opening (Z is formed and in the other of which the blindscrew g is secured; but the section in Fig. l is taken through the framework of the handle and does not show these detachable side plates.

The angle-arm f may be operated so as to turn the rotatable member 6 by simply pressing with the thumb on the head of the end portion f of said angle-arm, and when said end of the angle-arm is pressed downwardly to the full extent of its movement the parts will be in the position shown in dotted lines in The rotatable device 6 is pro- Fig. l and the hammer may be operated by pulling on the trigger in the usual manner; but when the head f of the part f of the angle-arm f is moved upwardly into the position shown in Fig. 3 the finger or nose piece it on the rotatable device a will engage with the hammer b, as shown in full lines in Fig. 1, and said hammer cannot be operated.

Arranged in the handle (Z and transversely of the mainspring 0 and at one side of the chamber (Z in said handle is a spring j, secured to the top and bottom frame portions of the handle, and this spring is provided centrally with a forwardly-directed loop or bend j which the transverse end portion f of the angle-arm f is adapted to engage, and when the angle-arm f is in the position shown in full lines in Fig. 1 the transverse end portion f thereof bears on said spring above the loop or bend f and when said angle-arm is in the position shown in dotted lines in Fig. 1 the transverse end portion f thereof is below the loop or bend of the springj, and this spring serves to hold the angle-arm f in its various positions and also the rotatable locking device 6, of which said angle-arm forms a part.

My improvement does not in any way change the appearance of the ordinary revolver, the head of the screw g and the head f" on the part f of the angle-arm f resembling ordinary screws placed in the front end portions of the detachable side pieces 6 of the handle cl, and these screws or heads serve as ornaments, and the use of the head f or the object thereof will not be understood by any one unfamiliar with the construction of the hammer-lock, and the gun may be used indefinitely in the usual manner by any one without a knowledge of the hammer-lock, as the hammer-lock can only be brought into operation by raising the head f of the end f of the anglearmf My improvement may also be applied to most all other styles, kinds, or classes of guns, and the use thereof is not limited to pistols or revolvers of the form shown and described.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In agun provided with a pivotally-mounted hammer, a pivotally-mounted lock to the rear of said hammer, said lock being provided with a nose-piece adapted to engage said hammer, a rearwardly and downwardly directed arm on said look, a member arranged on said rearwardly-directed arm and at right angles thereto and projecting through a slot in the handle of said gun, a button on said member outside of said handle, and devices for holding said lock in either of two positions, substantially as shown and described.

2. In agun provided with a pivotally-mounted hammer, a lock adjacent to the rear of said hammer, said lock being provided with a nosepiece adapted to bear against said hammer in one position and adapted to be released therefrom in another position, a rearwardly-directed arm on said lock, a spring provided with a loop for holding said arm in either of two positions, and a button outside of the handle of said gun for moving said look from one to the other of said positions.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 15th day of December, 1904.

MARTIN V. B. ALLEN.

Witnesses:

F. A. STEWART, C. J. KLEIN. 

